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Finding the Fourth Proportional to 665,829, 918,866.70 and 364,042.44

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Solution

The fourth proportional to 665,829, 918,866.70 and 364,042.44 is: 502,390.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,829 : 918,866.70 = 364,042.44 : x
  2. Step 2: Convert to fraction form
    665,829/918,866.70 = 364,042.44/x
  3. Step 3: Cross multiply
    665,829x = 918,866.70 × 364,042.44
  4. Step 4: Simplify right side
    665,829x = 334,506,475,502.75
  5. Step 5: Solve for x
    x = 334,506,475,502.75/665,829
  6. Step 6: Final answer
    x = 502,390.97

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.